Dr Juan Fumero presented at QCon London on TornadoVM, a plug-in to OpenJDK and GraalVM that runs Java on heterogeneous hardware including Graphical Processing Units (GPUs) and Field Programmable Gate Arrays (FPGAs). Demos during the presentation showed code being sped up by hundreds of times when running on a GPU vs a CPU.
GPUs and FPGAs can offer 2-3 orders of magnitude speed improvement for highly parallelisable workload. But those speed improvements have been difficult to obtain as programming requires the use of low level languages such as OpenCL and VHDL. TornadoVM makes acceleration accessible to programmers using Java and Node.js, and annotations are used to mark parallelisable code blocks as a hint to the compiler.